Manifold construction



Feb. 28, 1933. E. E. HUNTINGTON MANIFOLD CONSTRUCTION 2 Sheets-Sheet 1 Filed Sept. 4, 1926 INVENTQR.

m M r M Feb. 28, 1933- E. E. HUNTINGTON MANIFOLD CONSTRUCTION Filed Sept. 4, 1926 2 Sheets-Sheet PIIIIIIIIIIiIIIf'l/Ill. villi/Ill EDWARD E. HUNrINe'roN, or 'roLEno, onio, ASSIGNQR o e winLYs-ov inLANn Patented Feb. 28, 1933 UNITED STATES;

PATENT oFFIcE COMPANY, or TOLEDO, 01110, A CORPORATION or oHIo MANIFOLD CONSTRUCTION Application fired September 4, 1926. Serial No. mamas.

This application relates to engine manifolds and more particularly to manifolds for internal combustion engines, in which are incorporated auxiliary devices for facilitating the starting of the engine.

One of the objects of the invention is to provide amanifold for an internal combustion engine in which fuel vaporizers are situated adjacent the engine intake ports.

vide an intake manifold for an internal combustion engine in which the vaporizers are located at the lowest portions of'the manifold and in position to intimately contact with small quantities of liquid fuel therein.

Another object of the invention is to pro vide an intake manifold for an internal combustion engine that will have auxiliary liquid fuel vaporizers therein and a manually opera-ted device for introducing fuel adjacent the vaporizers when the engine is at rest.

A further object of the invention is to provide an intake manifold for an internal combustion engine in which liquid fuel may be both forcibly introduced and vaporized at points adjacent the engine intake ports.

Other. objects will appear in the description to follow in which for-the purposes of the I present application I have illustrated one em improved manifold in place and showing a .35-

suggested arrangement of the vaporizer and primer controls.

Fig. II is an enlarged sectional view of the vaporizer switch taken on line IIII of Fig. I.

Fig. III is an enlarged sectional view taken on line IIIIII of Fig. I. j v

Fig. IV is an enlarged .section of the fuel primer.

Fig. V is a sectional view taken on line V'V of Fig. IV, and I Fig. VI is an enlarged horizontal, sectional view of a portion of the manifold with one of the vaporizers in position and having the relative position of. the engine cylinders shown in broken lines.

Another object of the invention is toproe Referrin'g tothe drawings in which like characters refer to like partsthroughout the I views, l'is' an'internal combustion engine,

towhich is secured an intake manifold ilf for feeding the usual mixture' of. liquid'fuel' and air to theengine, the mixture supply. being led through apassage way inthe en gine from carburetor (not shown) to approximately the middle of the'manifold' at: From the middle of the manifold two branches 4 are led opposite directions and have a slight downward slope toward the ends, at which they join the smaller Y'-shaped portions 5 which coincide with the cylinder ports 6 as shown in Fig. VI. In eachof the branches 4 is a pocket 7 that opens into the branches at substantially their lowest points,"

which are preferably adjacent the intake ports 6.

Within pockets? areremovable electrically heated vaporizers 8 which are adapted to" vaporize any liquidfuel collecting inpockets 7. .The'electric circuit for heating the vapor izer 8 is led from a suitable source 'of current- 9 through a switch lOt'o the vaporiz'enand from there back to the source throughthe engine frame. Switch 10 preferably has a spring controlled op cratingbutton for making electrical connection between terminals 1-2, one of which is connected to the vaporizer wire 13 and the other to the 9 by means of asuitable wire' l4.

current Source 'With'i'n pockets 7 are" also located fuel in'-' 7 let connections 15 which are preferably di rected towards thevaporizers 8 at a slight upwardangle. Inlet connectiori's15 are cone" 1 nected'by suitable piping 16A to a manually operated fuel primer 16 which is adapted'to draw liquid fuel from a supply tank 17' through pipe 18 into 'thebody' of the primer and to forcibly inject it through; inle't con-' nections 15 into the manifold 2. Any desired form of primer may be used, but I prefer to.

use the atomizing type.

A well known 1 v primer that has been very satisfactory is'9 illustrated in Figs. V and VI, in'which an;

outward movement of handle 19' draws with it plunger 20'and'fills the'body of the'pr'imer with fuel from the supply tank 17' through connection 21, having an inwardlyopening inwardly the handle 19. The result of this procedure is to force atomized fuel into the 1 5 pockets 7 of the manifold 2 adjacent intake ports 6.,v A portion of this fuel will be sufficiently divided to be readily drawnfinto the intake ports but another portion will be condensed on the walls of the manifold and I claim as my invention:

In an internal combustion engine, an intake manifold comprising a downwardly sloping portion, a branch adapted to feed a plurality of cylinders extending from the end of said downwardly sloping portion toward; said engine, a fuel receiving downwardly extending pocket located near the junction of said branch with said manifold proper, and means operating independent of the operation of the engine for heating fuel in said pocket. V

Intestimony whereof, I aflix my signature.

EDWARD E. HUNTINGTON.

29;, drain "down thesloping branches 4; into the 7 pockets 7; The drainage will occur immediately afterthe fuel has been injected .so thatthe control switch 10 may be pushed in as-soon as the primer has been operated, and

- 25, should be held in contact for a short period,

such as fifteen or twenty seconds and then released. The. closing of the switch will cause the heating Vaporizers to convert the fuel in the cups from a liquid to a vapor 31), form, so that if the engine be turned over a in the usual manner an explosive fuel mixture will be drawn into the cylinders and result in immediate starting of the engine.

It may be readily seenfrom theforegoing gdescription that I have provided a manifold in'which both the mechanical injection of the atomized fuel and the vaporization of the 'liquid' fuel by heat takes place adjacent the engine intake ports. The location of the cups 9jadjacent the intake ports is very desirable because the distance that the mixture is re} quired totravel-isdecreased and the conden I sation and deposition. of liquid fuel is reduced; My experience hasbeen that it is 4apractically impossible to entirely eliminate condensation, consequently I prefer to construct my manifold with a slight slope toward the pocket and drain all liquid fuel, that is deposited on the manifold walls, toward 50.;thevaporizer. It was found that the sloping: construction had another advantage,-

what in detail a particular embodiment of c the invention, it is to be understood that this (ifi 'showing and description are illustrative only,

and that I do not regard the invention as.

limited to the details of construction shown and described except insofar as I have included; such limitations within the terms of 65..the following claim, I Q

so a 

